Extension device



Nov. 11,- 1930. E. G. cARLsoN 1,731,101

EXTENSION DEVICE Filed Jan. 21, 1930 IN VEN TOR.

212 147 6i fawlsvw flmw A TTORNEYS.

Patented Nov. 11, 1930 UNITED STATES ArENr oFFieEf EDWIN G. CARLSON, OF RIVERSI DE, RHODE ISLAND, ASSIGNOR TO SPEIDELCHAIN (30., OF PROVIDENCE, RHODE ISLAND, A FIRM COMPOSED F .FREDERIC SEEIDEL AND BUG-EN SPEIDEL EXTENSION nnvron Application filed January 21, 193( Serial No. 422,320. I

My present invention relates to bracelet extension devices, and has particular reference to bracelet extension devices suitable for use a folded position.

' forthin the appended claims.

A further object is to provide a bracelet extension device which is less noticeable when folded than similar devices of this nature.

With these and other objects and advantageous features in view, my invention consists in a novel arrangement of parts more fully disclosed in the detailed description following, in conjunction with the accompanying drawings, and more particularly-set In the drawings: I

Fig. .1 is a top plan view of a bracelet equipped with my improved extension device,

the extension device being in folded position; i I

width, and has two depending ea rs 21 22 adapted to fold over the edgeportions of the strap end 13 and the end section 11' when Fig. 2 is a side elevation thereof;

Fig. 3 is a View similar to Figure 2, the extension device being partially unfolded;

Fig. 4: is a view similar to Figure 3, the extension device being completely unfolded;

Fig. 5 is a bottom plan View of the extension device in folded position;

Fig. 6 is a section on the line 66 of Figure 1; and

Figs. 7 and 8 are respectively perspective: views of the base of the extension'device and of the catch member.

It has been found desirable to provide an after described. 3 T I of the base section toextend over the end .section and its associated strap and engage the base section to releasably lock the exten sion device in folded positionjand the following is a detailed description of one 'constructional form .of extension device embodying the principles of my invention.

Referring to the drawings, the extension device includes abase'section 10 and an end section 11 hingedly secured together as at 12, the strap ends 13 and 14 beingpivotally secured to the free ends of the two sections.

The base section 10 is channel shape in cross-section, the two walls, 15, 16, receiving the end section 11 and the strap end 13 when the extension device is in folded position. Each wall'has a resilient finger, respectively designated 17 and 18, formed therein, pref erably by cuttingvertical slots in thewalls,

the resilient fingers 17 and18 each having snap grooves 19 therein for a purpose herein- Pivotally mounted on the strap end of the basesection 10v is'a catch 20, which may be, and preferably is, hinged directly on 'the hingepin connecting the strap end '14. and the base section 10. The catch 20 is of small exteriorthereof, each ear having a projection 23 therein for releasably'locking with the, groove 1910f the corresponding resilient finger- The catch 20 is also provided with a fingerlip24 for manual lifting when unfolding the extensio'n device. 7 Q i The operation of my improved extension device may now be explained. The bracelet being in unfoldedpjolsitiomas shown in- Figure 4, the end section 11 is swung until 'it nests within the base section 15 the strap end 13 pivoting on its connection with the end section toalso nest within thewalls'of thebase section. The catch 20 is now riroved'Ldownwardly toembrace and cover the adjacent ends of the strap'end 13 and end section 11, the'ears 21, 22 pas'sing'over and en 'aging the resilient fingers 17 and 18' until 13%18 projections 23 snap into the grooves 19, thus releas ably locking the extension device in folded position.

My improved extension device therefore 'preserves the continuity of appearance of the bracelet, sincethe catch may be of similar form t'o and of'similar ornamentation to the, link sections themselves, when used with a link section bracelet, or may be suitably or&

types of bracelets 1' Thecatch is small and in I conspicuous, and :the nesting of the end sectionand the contiguous strap end within the basesection permits a reductionin thickness of the'extension device and thusinc reas es the attractiveness of the bracelet.

While I have-described a specific con- "'stfructionof the, novel extension device, itis ibb'v'ious that the form and the arrangement of the various elements thereof may be changed to suitithe' requirements of different bracelet designs Without departing from the spirit and'fthe scopeof-the invention as definedin the, appended claims,- g

"rcnimy, I

1. In a bracelet extension device, end membershin'gedly connected together to permit f nesting, strap securing means at the'free ends of'said end members, one end member having a.- resilient latch, and a cover less than one- "half the length of said members pivotally mounted on said-same endmember extending 'over-the'free end of the other member when nested and releasably engageable with said -latch, to secure the members in nested rela tion v 1 2."In a bracelet extension device, end mem bers hingedly connected together. to permit 1 nesting, strap securing meansat the free ends 7. of said end members, onejen'd member having a'resilient latch, and a movable catch mounted on the "strapsecurin'g means of said same v endmember extending over the freeend of namented to match with the designs of other end member extending over the free end of the If other member when nested and releasably en 'a 'eable' with said latches to secure the I each channel wall thereof, and a catch mount ed onthes'trap securing meansof said same "end member extending over the free end of the other member when nested and releasably member's'in nested relation.

6. In abracelet extension device, endmembers hingedly connected together to permit nesting, one of said end members being chan-- engageable withsaid latches to secure the nel shaped,strap securing means at the free ends of said end "members, said channel shapedwmember having resilient latch fingers in the channel walls'thereof, a manually op- .erable finger piece pivotally mounted onthe strap securing means of-said channel shaped member and extending over the end thereof, and catches on said finger iece releasably engageablewith said latch ngers. l p

7. In a bracelet extension device, two end .members hingedly connected together to permit nesting, one of said-end members being,

,channel shaped, strap securing means atrthe free vends of said end members,said channel. shaped member having resilient latch fingers s in the channel walls thereof, a manually operable finger piece pivotally mounted on the i strap securing means of saidchannel shaped member and extending over the free end of the other member when ne sted,and-catch elements on said fingerpie'ce releasably engageable with said latch'fingers,

" the other member when nestedand releasably engageable with said latchto secure .the'mem- 7' bersin nested relation. v

r 3. 'Inia bracelet extension device, end mem- I 'jb ers hingedly connected together to permit inesting,strap securing means at thefree ends of saidfndmembers, one end member being o ch annl shape'd and having 'a' resilient latch V a resili-ent 'latch eachchannel wall thereof, anda cover less than one-halftthe-length of- "saidm mb rs'p ro w ly-mo t d n said am f:

"in'a" channel wall thereof, and cover less than one-half theflength of said members, on i said, same end'member extendlng cover the fffreew end of the other-{member when; nested a Sand having a catch to'releasably engage w th said latch'tosecure'themembersin nested re- Iation. 5

f AI Ina. braceletfextension devicenend mem ees hingedlyfconnected'vtogether to permit;

} nesting, stra'p securing means at the free'en'ds ,of saidiendmembers, one endmember having In testimony whereof I afiixjmy signature ARLS N 

